Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: Inspection

(a) for Front Washer:

(1) Remove the washer jar.

(2) Disconnect the washer motor and pump assembly connector.

HINT:

This check should be performed with the washer motor and pump assembly installed on the washer jar.

(3) Fill the washer jar with washer fluid.

(4) Connect a battery positive (+) lead to terminal 1 of the washer motor and pump assembly, and a negative (-) lead to terminal 2.

(5) Check that washer fluid flows from the washer jar.

OK:

Washer fluid flows from the washer jar.

If the result is not as specified, replace the washer motor and pump assembly.

(b) for Rear Washer:

(1) Remove the washer jar.

(2) Disconnect the washer motor and pump assembly connector.

HINT:

This check should be performed with the washer motor and pump assembly installed on the washer jar.

(3) Fill the washer jar with washer fluid.

(4) Connect a battery positive (+) lead to terminal 2 of the washer motor and pump assembly, and a negative (-) lead to terminal 1.

(5) Check that washer fluid flows from the washer jar.

OK:

Washer fluid flows from the washer jar.

If the result is not as specified, replace the washer motor and pump assembly.